The term antiparallel may refer to:
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Antiparallel (biochemistry)
In biochemistry, two biopolymers are antiparallel if they run parallel (geometry), parallel to each other but with opposite directionality (molecular biology), directionality (alignments). An example is the two complementarity (molecular biology), ...
, the orientation of adjacent molecules
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Antiparallel lines
In geometry, two line (geometry), lines l_1 and l_2 are antiparallel with respect to a given line m if they each make congruence (geometry), congruent angles with m in opposite Sense of rotation, senses. More generally, lines l_1 and l_2 are ''anti ...
, a congruent but opposite relative orientation of two lines in relation to another line or angle
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Antiparallel vectors
In mathematics, physics, and engineering, a Euclidean vector or simply a vector (sometimes called a geometric vector or spatial vector) is a geometric object that has magnitude (or length) and direction. Euclidean vectors can be added and scal ...
, a pair of vectors pointed in opposite directions
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Antiparallel (electronics)
In electronics, two anti-parallel or inverse-parallel devices are connected in parallel but with their polarities reversed.
One example is the TRIAC, which is comparable to two thyristors connected back-to-back (in other words, reverse paral ...
, the polarity of devices run in parallel
See also
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Antiparallelogram
In geometry, an antiparallelogram is a type of list of self-intersecting polygons, self-crossing quadrilateral. Like a parallelogram, an antiparallelogram has two opposite pairs of equal-length sides, but these pairs of sides are not in general ...
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